Watc h - r eg u lato r



(No Model.)

D. H. CHURCH.

WATCH REGULATOR.

No. 312,253. Patented Feb. 1'7, 1885.

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UNITED STATES PATENT OFFICE.

DUANE H. salmon, or WALTIIAM, MASSAeIIusETTs.

WATCH-REGULATO R.

SPECIFICATION forming part of Letters Patent No. 312,253, dated February17, 1885,

Application filed March 21,1884. (No model.)

To all whom it may concern:

Be it known that I, DUANE H. CHURCH, of WValtham, in the county ofMiddlesex and State of Massachusetts, have invented certain Improvementsin Watch-Regulators,of which the following is a specification.

This invention has for its object to provide simple and durablewatch-regulator operating devices adapted to effect very fine adjustment, and to prevent accidental movement of the regulator, and alsoadapted to permit rapid or coarse adjustment when the same is desirable.

To these ends my invention consists in the improved devices which I willnow proceed to describe.

Of the accompanying drawings, forming a part of this specification,Figure 1 represents a plan view of a balance-cock provided with myimproved regulator. Fig. 2 represents a section on line 0c 00, Fig. 1.Fig. 8 represents a view of a part detached.

The same letters of reference indicate the same parts in all thefigures.

In carrying out my invention I provide the outer end of the arm a of awatch-regulator with lateral extensions proj ecting at both sides of thearm, and presenting a segmental edge or end, a, which is formed in theare of a circle having its center in the center on which theregulator-arm a moves.

On the surface of the cock I), I place loosely a star-wheel, 0, havingat one side a journal or trunnion, d, which is pressed against thesegmental edge or end of the regulator-arm by a spring, 6. Said springis secured at its ends to thecock by screws f f, and is provided with anotch, 6, (see Fig. 3,) which engages the journal (1 of the spur-wheel,and prevents displacement of said journal and wheel. The spring, beforeapplication to the cock, is curved at a greater radius than thesegmental edge of the regulator-arm. The holes that receive theattaehingscrews f f are so arranged that after the spring is attached atone end the presence of the journal (1 between its central portion andthe segmental edge a will prevent the screw-hole in the other end of thespring from coinciding with the corresponding screw-hole in the cookuntil the end of the spring is pressed toward the segmental edge, thuscausing the spring to exert a considerable pressure against the journal,and to press the latter closely against the segmental edge. It will beseen that when the wheel a is rotated the frictional bearing of thejournal d against the segmental edge of the regulator-arm will cause thejournal to move said arm,and thus effect as fine an adjustment of theregulator as may be desired. The yielding pressure of the journalagainst the segmental edge a enables the regulator to be moved morerapidly without recourse to the wheel a, the edge a slipping on thejournal. Said pressure is sufficient, however, to prevent the regulatorfrom being moved accident-ally by jars to which the watch may besubjected. The yielding pressure also compensates for wear of thejournal and of the segmental edge, so that the operative relationbetween said parts will not be affected by any wear which they mayexperience. The wheel 0 has no engagement with the cock, so that it isfree to be moved thereon by the spring, which is thus enabled to adjustthe journal to the segmental edge. It will be seen that the notchedspring not only presses the journal against the segmental edge of thereg ulator-arm, but also furnishes a bearing for said journal, whichprevents it from being displaced.

I elaim-- 1. In a watcltrcgulator, the rcgulatorarm having a segmentaledgeor end, a, combined with a star-wheel having a journal, (I, placedon the balance-cock, and a spring whereby said journal is pressedagainst the segmental end of the regulator-arm.

2. In a watch-regulator, the combination of the regulator-arm having thesegmental end a, the stai wheel placed loosely on the bal ancc-eock, andhaving a journal, (I, and a notched spring whereby said journal ispressed against the segmental end of the regulatorarm and held in place,as set forth.

In testimony whereof I have signed my name to this specifioatiomin thepresence of two subscribing witncsses, this 18th day of llIarch, 1884:.

DUANE H. CHURCH.

Witnesses:

G. F. BROWN, A. L. WHITE.

